Steempower will always the benefit over the visibility and influence on Steem Blockchain and as for the launch of SMT's next year it will cat as a vital point in getting some benefit from the dapps created on Steem Blockchain.
However, as far as I am aware of not only SP will be the reason to get benefit from the dapps but the users who will have more SMT tokens of the particular dapp will have more influence on that dapp.
Lets give an example
The user 1 will have more influence in case of Steem/SBD payout while user 2 will have more influence in that dapp, as that user will be able to give much more reward via that SMT token(that he/she holds) to any user that he/she likes in that particular dapp.
Furthermore, as far as we know that SMT tokens will be exchangeable with Steem after the launch of SMT's next year, which as a result means that users with more SMT tokens will get more reward both in the form of SMT's and Steem (at the end by exchanging SMT's)
So in my point of view I can say that collect as much SMT tokens as possible for now. Who knows what the values of those tokens will be in the coming days.
@Acesontop, One thing we have to keep in mind and that is, in my opinion when the SMT Protocols are launched then projects which are coming up with their their SMT's can Airdrop the tokens on the basis of the 1:1 means if you have 1000 Steem Power then 1000 tokens. Let's hope for the best.
Wishing you an great day and stay blessed. 🙂
" How much of an importance will the SP one holds when SMTs will be launched next year? "
As much as you can. Steem blockchain members grow exponentially. So we need to prepare for bull run.
" What are the benefits to hold as much SP as possible after the launch of SMTs? "
SP HODL'er always has the advantage of getting more money, especially when SMT has been launched.
The major benefit of holding more sp is the influence you have on the platform. Should you hold more sp and smt causes steem price to increase drastically, you'll be at a greater advantage because your upvotes will be worth more than those with little sp. You also get support easily on steemit if you hold more sp